author = "Dias J{\'u}nior, Cleo Q. and Marques Filho, Edson Pereira and 
                         S{\'a}, Leonardo Deane de Abreu",
          affiliation = "Instituto Federal de Educa{\c{c}}{\~a}o, Ci{\^e}ncia e 
                         Tecnologia do Par{\'a} and {Universidade Federal da Bahia (UFBA)} 
                         and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "A large eddy simulation model applied to analyze the turbulent 
                         flow above Amazon forest",
              journal = "Journal of Wind Engineering and Industrial Aerodynamics",
                 year = "2015",
               volume = "147",
                pages = "143--153",
                month = "Dec.",
             keywords = "Amazon forest, Coherent structure, LES, Reynolds stress, Rougness 
             abstract = "The occurrence of coherent structures (CS) above the Amazon forest 
                         is analyzed. To perform this study, a large eddy simulation (LES) 
                         model is used, which has been improved by the introduction of a 
                         drag force which is representative of a typical Amazon forest 
                         canopy. The results show that the flow is sensitive to the 
                         presence of canopy and an inflexion point is simulated in wind 
                         profiles. On the region between 1. h and 4 h several CS features 
                         associated with turbulent flow regarding pressure, momentum 
                         fluxes, skewness and vorticity fields are detected suggesting that 
                         {"}roll{"} structures arranged perpendicularly to the mean wind 
                         direction populate this region. Other interesting LES results 
                         were: (i) the skewness of the wind velocity has also a maximum 
                         value on the region, what indicates an asymmetric distribution of 
                         the wind velocity relatively to its mean value, a fact that might 
                         be associated with the generation process of the {"}roll{"} 
                         structures; (ii) the horizontal vorticity component transversal to 
                         the mean wind direction is greater than the vorticity components 
                         on the other orthogonal directions suggesting that {"}roll{"} 
                         structures move perpendicularly to the mean wind direction.",
                  doi = "10.1016/j.jweia.2015.10.003",
                  url = "http://dx.doi.org/10.1016/j.jweia.2015.10.003",
                 issn = "0167-6105",
             language = "en",
           targetfile = "2015_dias junior.pdf",
        urlaccessdate = "05 dez. 2020"